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Proceedings Paper

Femtoseconds-picoseconds nonlinear optics with nearly-mm thick cholesteric liquid crystals
Author(s): I. C. Khoo; Chun-Wei Chen; Tsung-Jui Ho; Tsung-Hsien Lin
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Paper Abstract

We have succeeded in fabricating unusually thick (up to ~ 550 microns), well aligned cholesteric liquid crystals that possess low scattering loss, large operating temperature range and well-defined photonic bandgap in the visible - near infrared regime. These CLC’s possess sufficiently large ultrafast (sub-picosecond) electronic optical nonlinearity needed for direct compression, stretching and recompression of femtoseconds-picoseconds laser pulses without additional optics, as demonstrated by theory and experiments. Despite such world-record setting thickness, these CLC’s are extremely compact in comparison to other state-of-the-art materials/devices used for similar operations. They are therefore highly promising for miniaturization and reduced complexity of photonic platform/systems for ultrafast pulse modulations.

Paper Details

Date Published: 15 February 2017
PDF: 7 pages
Proc. SPIE 10125, Emerging Liquid Crystal Technologies XII, 1012507 (15 February 2017); doi: 10.1117/12.2257429
Show Author Affiliations
I. C. Khoo, The Pennsylvania State Univ. (United States)
Chun-Wei Chen, The Pennsylvania State Univ. (United States)
Tsung-Jui Ho, The Pennsylvania State Univ. (United States)
Tsung-Hsien Lin, National Sun Yat-Sen Univ. (Taiwan)

Published in SPIE Proceedings Vol. 10125:
Emerging Liquid Crystal Technologies XII
Liang-Chy Chien, Editor(s)

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